//
//  Ch1ViewController.m
//  CoreAnimationExample
//
//  Created by 山刘 on 2020/9/23.
//

#import "Ch1ViewController.h"

@interface Ch1ViewController ()
@end

@implementation Ch1ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    CALayer *layer = [CALayer layer];
    layer.backgroundColor = UIColor.blueColor.CGColor;
    
}
@end
